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Reproduction in plants - Coggle Diagram
Reproduction in plants
Importance of reproduction
Living things only live for a period of time and they die eventually.
The period of time for which they live is called the lifespan.
Therefore, reproduction is essential for the survival of all living things.
Without reproduction, life would come to an end because living things cannot live forever and all of them will become extinct.
Reproduction is the process by which organisms give rise to offspring.
The importance of reproduction is to ensure continuity of their species.
Sexual reproduction
Joining of male and female sex cells.
Sexual reproduction in flowering plants
Male parts
Anther
Produces pollen grains
Stores the pollen grains in pollen sacs
Filament
Holds the anther up
Female parts
Stigma
Receives pollen grains its sticky surface
Style
Positions the stigma
to receive pollen grains
Connect the stigma to the ovary
Ovary
Produces egg cell
Protects
Ovules
Plural
an ovule
Singular
After fertilisation
Develops into a fruit
Ovule
Contains the egg shell
After fertilisation
Develops into a seed
Pollination
Pollination is the transfer of pollen grains from the anther to the stigma.
Insect-pollination Flowers
Petals
Large
Brightly coloured
Scented
Have nectar
Stigma
Sticky
Allow pollen grains to attach to it easily
Increase the chance for pollination .
Wind-pollination Flowers
No scent
Have no nectar
Stigma
Large and feathery
to catch pollen grains drifting in the air
Increase the chance for pollination
Hanging outside the flower
Petals
Smaller
Dull coloured
Pollen grains
Larger amounts
Light weight
Powdery
Small
smooth
Wind-like extensions
Plant Examples
Paddy plant
Maize
Grass
Oak
No gender
Petal
Attracts pollinators
Insects
Animals
Birds
Sepal
Protects young flower
while in buds
Flower stalk
Attract pollinators
Holds the flower up
